Note that all the hyper-parameters used in the local context and global model of [1]} ganea2017deep were set to the same values as theirs for direct comparison purpose. Detailed hyper-parameters setting is described in the appendices. Our model is trained with 4 NVIDIA Tesla P100 GPUs. We run each of our model five times with different random seeds, and the performance is reported in the form of average \(\pm \)  standard deviation.
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